How to Create a Custom Show in PowerPoint 2013
On the Slide Show tab on the Ribbon, click Custom Slide Show (located in the Start Slide Show group) and then choose Custom Shows from the menu that appears.
This displays the Custom Shows dialog box.
Click the New button.
The Define Custom Show dialog box appears.
Type a name for the custom show in the Slide Show Name field.
Add the slides that you want to appear in the custom slide show.
All the slides available in the presentation are listed in the list box on the left side of the Define Custom Show dialog box. To add a slide to the custom show, select the slide that you want to add and then click Add. The slide appears in the list box on the right side of the Define Custom Show dialog box.
Use the up and down arrows near the right edge of the Define Custom Show dialog box to change the order of the slides in the custom show.
Click OK to return to the Custom Shows dialog box. Click Close to dismiss the Custom Shows dialog box.